My first reaction to the new Tyranids (from Warhammer 40k) was very much akin to the general outrage towards the new codex. While I still believe that the codex was rushed/lazy/boring, it does have more of a competitive edge. The biggest issue with the codex is that they basically just took the old book, gave every model a nerf and cut the cost by about 20-25%. Book done... it just feels lazy and poorly thought out. They also just removed anything they didn't have models for (thanks Chapter House) and most of the fluff is copy pasted from the last book!
From a more technical standpoint, the thing that bugs me the most is making scything talons useless (most of my models have them because I used to love scything talons!). I also loved the way Tervigons worked, and now they are pretty horrible as they don't give their biomorphs to their termagants. I don't care too much that they took away biomancy (they didn't take the book powers from anyone else though...) but they could have at least made the Nid powers better (Warp Lance costs one more warp point but has one worse AP? Really??). The new models are cool, but difficult to use.
In the end there are lots of little things you can fight over that made them worse, or slightly better in other areas, but in the end the book suffers from it being extremely poorly thought out and rushed. I've only played one game so far (and I did win against the Eldar) and my army performed well. I think it will be a difficult army to use, but will be rewarding when you win.
Good luck to fellow followers of the Hive Mind
